VI. Complete the text with the words in the box.
by    while     after     before     when      in

(1) _______ January last year, schoolchildren in the UK raised money for cancer. The organizers called the campaign “The Big Hush”. The children’s friends and families sponsored them to be silent for one week. The children didn’t speak (2) ________ they were working in class. They were also silent (3) ______ they were playing in the playground! (4) _________ the week, they collected the money that their friends and families had sponsored. They counted the money (5) ______ handing it in to the charity. (6) _____ February, they had managed to collect thousands of pounds – without saying a word.